Rails - Mar 2006 - How do I get an array of object ids?

If a = object, then a[:id] => 11 (ie, the primary key value of object.

But if bs = [ object1, object2], then bs.each { |b| = b[:id] } => bs

What I want is an array of the object ids?

Suggestions?

Hi Ray,

Try this:  a = bs.collect { |b| b.id }

Ray Baxter wrote:
> If a = object, then a[:id] => 11 (ie, the primary key value of object.
> 
> But if bs = [ object1, object2], then bs.each { |b| = b[:id] } => bs
> 
> What I want is an array of the object ids?
> 
> Suggestions?

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I don''t quite follow your example, but if you want a method which copes
with either a single object, or an array of objects, this should work:

def object_ids(*objects)
  objects.flatten.collect { |o| o.id }
end

-Jonny.


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